JPS5554417A - Method and device for measurement of transient response - Google Patents
Method and device for measurement of transient responseInfo
- Publication number
- JPS5554417A JPS5554417A JP12769978A JP12769978A JPS5554417A JP S5554417 A JPS5554417 A JP S5554417A JP 12769978 A JP12769978 A JP 12769978A JP 12769978 A JP12769978 A JP 12769978A JP S5554417 A JPS5554417 A JP S5554417A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- square
- law
- noise
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To improve measurement precision by eliminating an influence of noises by simple constitution, by obtaining the square-law result of the effective value of a digital signal obtained from a noise by converting.
CONSTITUTION: Noises collected by microphone 4 in room 2 are inputted to holding circuit 7, controlled by signal C-1 from timing circuit 23, by way of amplifier circuit 5 and LPF6. This held noise is converted into a digital signal by A/D converter circuit 8 and inputted to subtracter circuit 10 by way of square-law circuit 9, and after subtraction of output "0" of gate 16 from the digital signal by gate control circuit 17, the result is sequentially accumulated by accumulator 11. The square-law value of the accumulated noise passes through register 14 in period (τ) by signal C-2 and divider circuit 15 obtain the square-law value of the effective value, which is inputted to gate 16. In this way, the square-law value of the effective value of the noise is updated in period (τ) before short-tone generator 1 generates an impulse, so that measurement precision can be improved without an influence of noises.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12769978A JPS5554417A (en) | 1978-10-17 | 1978-10-17 | Method and device for measurement of transient response |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12769978A JPS5554417A (en) | 1978-10-17 | 1978-10-17 | Method and device for measurement of transient response |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5554417A true JPS5554417A (en) | 1980-04-21 |
JPS6216364B2 JPS6216364B2 (en) | 1987-04-13 |
Family
ID=14966508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12769978A Granted JPS5554417A (en) | 1978-10-17 | 1978-10-17 | Method and device for measurement of transient response |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5554417A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014026241A (en) * | 2012-07-30 | 2014-02-06 | Yamaha Corp | Reverberation time analyzer |
-
1978
- 1978-10-17 JP JP12769978A patent/JPS5554417A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014026241A (en) * | 2012-07-30 | 2014-02-06 | Yamaha Corp | Reverberation time analyzer |
Also Published As
Publication number | Publication date |
---|---|
JPS6216364B2 (en) | 1987-04-13 |
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